AURORA®
410 SERIES
SINGLE STAGE SPLIT CASE PUMPSWWW.AURORAPUMP.COM
MOdel 411
MOdel 413
2
SINGle STAGe SPlIT CASe PUMPS
VeRTICAl
MOdel
413
OPTIONAl
RIGHT-HANd
ROTATION
VeRTICAl
MOdel
412
OPTIONAl
leFT-HANd
ROTATION
HORIZONTAl
MOdel 411
SPACe SAVING
VeRTICAl SPlIT
CASe PUMPS – PUT
THe MOTOR ABOVe
FlOOd CONdITIONS
AURORA®
410 SERIES
Single Stage Split Case Pumps
Capacities to 15000 GPM (3407 m3/hr)Heads to 663 Ft. (202 m)Temperatures to 275˚F (135˚C)
IntroductionThe horizontal split case pump has long been used for the handling of liquids
where the utmost in reliability and accessibility is paramount. Billions of gallons
of liquid have been pumped by split case double suction pumps and billions more
will be pumped considering the rapid industrial, agricultural and commercial
expansion. The Aurora 410 Series pumps make a significant contribution to the
customer requirements for pumps on this type of service. The 410 Series is a
modern design based on Aurora’s over 90 years of experience with the design, sales
and manufacturing of split case pumps. Look through this brochure and see what
real accomplishments can be made when an imaginative approach is taken to the
customer’s problem of moving liquids within a piping system.
Model 411 is horizontally baseplate mounted with a driver flexibly coupled
to the pump. This design is recommended where floor space is readily available
and where flooding of the installation is not possible.
Model 412 is vertically mounted and uses flexible shafting between the
driver and the pump. This model is frequently used on difficult applications where
flooding of the installation is a possibility.
Model 413 is vertically mounted with an elevated driver coupled directly to
the pump through a flexible coupling. Model 413 is very popular for installations
where available floor space is limited and where possible flooding is marginal.
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SINGle STAGe SPlIT CASe PUMPS
Pump Features
DISCHARGE
SUCTION
STANDARD
RIGHT HAND ROTATION
DISCHARGE
OPTIONAL DUAL DRIVE
RIGHT HAND ROTATION
SUCTION
DISCHARGE
OPTIONAL
LEFTHAND ROTATION
SUCTION
Standard Features•Bronzefittedpumpconstruction
•Bronzeshaftsleeves
•Dynamicallybalancedimpellers
•Bronzecasewearingrings
•Twinvoluteon10"andlargerpumps
•Stainlesssteelimpellerkey
•Regreaseableballbearings
•Singlerowballbearing(inboard)
•Doublerowballbearing(outboard)
•Mechanicalseals...singleunbalanced(Models 412 and 413)
•GraphiteandTFElubricated acrylic packing
• Internalbypassbetweencasingandstuffing box
•125#ASAflanges
•250psicaseworkingpressure
•Carbonsteelshaft
•Stuffingboxbushings
•Liftinglugs
•Hydrostatictest
•Castintegralbearingarms
•Waterslingersandgreaseseals
•Externalbypassbetweencasingandstuffing box (Models 412 and 413)
•Couplingguard(Model411)
Optional Features•Alliron,allbronzeorspecialalloy
pump construction
•Hardened440Cstainlesssteelshaftsleeves (packing only)
•316stainlesssteelshaftsleeves(mechanical seal)
• Impellerwearingrings
•Oillubricatedballbearings (Model 411 horizontal pump)
•Mechanicalseals – single unbalanced (Model 411) – single balanced (all models)
•StainlesssteelorMonel® shaft
•Externalbypassbetweencasingandstuffing box (Model 411)
•Steeldriprim,formedsteelorfabricated steel bases
•Doubleextendedshaft(Model411)
•Right-orleft-handrotation
•Certifiedperformancetest
•Packingwithlanternring(Model411)
•250#ASAsuctionanddischargeflanges
•Bottomsuctionorchairmountedpumps
•Watercooledcartridgecaps
4
SINGle STAGe SPlIT CASe PUMPS
Horizontal Pump Features
A. SplitCaseDesign simplifies disassembly. The suction and discharge piping and alignment is
not disturbed. Simply remove the upper casing for service or inspection.
Cast lifting lugs are provided. Computer-machined major components with 360 degree registered fits assure concentricity of all parts. Twin volute design
balances out radial hydraulic thrust loads on larger split case pumps (see
RangeCharts).
B. DynamicallyBalancedImpeller iskeyedtotheshaftandsecuredbyadjustableshaftsleeves.Doublesuction
design balances out hydraulic thrust loads. Vacuum cast process and proven
design provides high efficiency and performance.
C. Bronze Shaft Sleeve prevents shaft wear, is slip fit over the shaft, keylocked and extends the entire
lengthofeachstuffingbox.ShaftsleevesandimpellerareO-ringsealedtoeliminate corrosion of the shaft by the pumped liquid. This eliminates the need
for high cost, special stainless steel or Monel® shafts.
d. Interchangeable Stuffing Box for mechanical seals or packing. Packing is standard on horizontal pumps.
Optional lantern rings have internal water seal passages between the casing
and stuffing box and cannot be damaged. Mechanical seals have carbon
against ceramic face. Long life is assured with 303 stainless steel metal parts
andBuna-Nelastomers.Severaloptionalmechanicalsealsareavailable.
e. Grease Lubrication purges old grease from bearing. Oil lubrication is optional on horizontal pumps.
Lube fittings are conveniently located for quick access and provide positive
bearing lubrication. Oil seals and nonsparking neoprene rotating slingers
protect both bearings during pump operation and washdowns.
F. Bearings selected for 50,000 hour minimum life at maximum load. Average bearing
life5xminimum.Doublerowthrustballbearingisstandardonallmodels.Short bearing span holds shaft deflection to .002" at face of stuffing boxat maximum load. Integral bearing arms eliminate bearing misalignment and
simplify service.
G. Left-HandRotation can be readily provided with standard parts. Tandem drive pumps require only
a different shaft.
H. Certified Performance with positive suction pressure or with a suction lift is available on each pump
for customer approval. Pumps are all hydrostatically tested.
I. CaseWearingRings and throttle bushings prevent wear on the pump casing and are easily and
inexpensively replaced.
A
B C d
e
FG
H
I
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SINGle STAGe SPlIT CASe PUMPS
Vertical Pump FeaturesKey Features
A. Coupling Alignment with true alignment is vital to long life and proper performance. To maintain
proper coupling alignment, the mounting bracket is rabbet fitted to the motor.
B. Mechanical Seals Standard construction includes carbon against ceramic face for optimum hot
water performance. Long life is also assured with 303 stainless steel metal
partsandBuna-Nelastomers.
C. Bearing Protection Grease seals and water slingers are provided to protect the bearings from
contamination. This important feature is also standard on horizontal pumps.
d. CastIronDripRimBase Accurate positioning of the pump is assured by the mounting base. A drip rim
is incorporated in the base design to control condensation and leakage.
eXTeRNAl UPPeR SeAl FlUSH
A
B
C
d
BenefitsGo vertical and put two pumps where only one horizontal would fit.
Aurora’s® space saving vertical split case pumps have long been
recognized for their reliability. This reputation in the field of vertical
installations has been re-emphasized since the introduction of theModel 413 as pumps of unmatched quality.
Vertical pumps provide distinct advantages over horizontal pump
construction.
•Lessfloorspacerequired.
•Inlinepipingarrangementallowspipinginanydirection.
•Elevatedmotorprotectsagainstpotentialfloodingifthepumpstation is in a low area. Additional features described for the
horizontal pumps are also found in the vertical pumps. There are
several features unique only to Model 413.
MOdel 413
6
SINGle STAGe SPlIT CASe PUMPS
RangeCharts
50
45
40
35
30
25
20
15
10
5
0
HE
AD
(m
)
FLOW (m3/hr)
1 10 100 1000 10000
12
x1
4x
15
B
12
x1
4x
18
A
14
x1
6x
18
10x12x18D
10
x1
2x
18
8x10x21
10
x1
2x
15
B
8x
10
x1
7B
10x1
2x1
2B
6x8x18A
6x8x20
6x8x18B
8x
10
x1
5B
8x10x12
5x6x17
4x6x18B
8x8
x1
1B
5x6x15
5x6x11A
4x5x15
4x5x11A
4x5x11D
1
2
3
4
5
6
7
6x8x11
6x8x15
8x10x15A
8x10x12A
6x8x18C
10x12x15C
8x10x21A
2.5x3x12
3x4x14
2x2.5x12
1
2
34
6
5
7
160
140
120
100
80
60
40
20
50
40
30
20
10
HE
AD
(F
EE
T)
(ME
TE
RS
)
U.S. GPM
USM3/HR
100 200 300 400 500 600 700 800 900 1000
10 20 30 40 50 60
40 80 120 160 200 240
40%50% 60% 65%
71%
71%
70%
65%
60%
30HP
25HP
20HP
15HP
6NPSH
5NPSH
4NPSH
7NPSH
8NPSH
10NPSH
18.25"
17"
15.5"
M A X . S P H E R E SIM P. PAT T. N O .
1 8 0 A 2 1 6 L O W E R
C A S E PAT T. N O .
.5 6 3 IN4 4 4 A 1 4 2
1 8 0 A 2 1 5 U P P E R (A L L )
M IN . IM P. D IA . 1 5 .5 IN1 8 0 A 2 5 9 L O W E R
2PC-117376
(411)(412 & 413)
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 4
Power Frame No. 2 Power Frame No. 4A
Power Frame No. 3 Power Frame No. 5A
1000RPM
900
800
700
600
500
400
300
200
100
90
80
70
60
50
TO
TA
L D
YN
AM
IC H
EA
D –
FE
ET
CAPACITY – GALLONS PER MINUTE
30 40 60 90 100 200 300 400 600 800 1000 2000 3000 5000 9000
6x8x14HH
6x8x11HH
5x6x11C
4x5x11D
4x5x11C
2.5x3x10B
3x4x10B
3x4x10C
4x
5x
10
B
2x2.5x9
2x2.5x10
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 5
Power Frame No. 2 Power Frame No. 6B
Power Frame No. 3 Power Frame No. 7
Power Frame No. 4 Power Frame No. 7A
Performance CurvesThe individual curve for the size pump selected is found in the catalog. These performance curves give complete operating characteristics, efficiency, horsepower and N.P.S.H. required. Horsepower lines on these curves are based on specific gravity of 1.0. To obtain the horsepower for a liquid of a different specific gravity, multiply the horsepower obtained from the curves by the specific gravity of that liquid. The performance curve illustrated to the left is typical of the individual curves readily available for each pump size.
SingleVolute3500RPM
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SINGle STAGe SPlIT CASe PUMPS
RangeCharts
900
800
700
600
500
400
300
200
100
8070
60
50
40
30
20
10
TO
TA
L D
YN
AM
IC H
EA
D –
FE
ET
CAPACITY – GALLONS PER MINUTE
20 30 40 50 60 80 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000
12x14x18A
12
x1
4x
15
B1
0x
12
x1
8D
8x10x21
10x12x18
10
x1
2x
15
C
10x12x12
B
8x
10
x1
5A
8x
10
x1
2A
8x1
0x1
5B
8x
10
x1
2
1
2
3
4
5
6
7
8
9
10
3x4x10C
4x5x11C
6x8x15
6x8x18B
6x8x18A
6x8x18C
6x8x20
8x10x17B
8x10x21A
10x12x15B
5x
6x
11
C
6x
8x
11
5x6x11A
8x
8x
11
B
5x6x15
4x6x18B 5x6x17
4x5x11D
4x5x11A
4x5x153x4x14
2.5
x3
x1
0B
2.5x3x12
3x4x10B
4x
5x
10
1
2
3
10
9
8
65
4
7
2x2.5x92x2.5x10
2x2.5x12
1750RPM
400
300
200
10090
80
70
60
50
40
30
20
TO
TA
L D
YN
AM
IC H
EA
D –
FE
ET
CAPACITY – GALLONS PER MINUTE
20 30 40 50 60 80 100 200 300 400 500 600 800 1000 2000 3000 4000 5000 7000 10000 20000
12
x1
4x
15
B
12x14x18A
14x16x18
10
x1
2x
18
D
8x10x21
10x12x18
10
x1
2x
15
C10x12x12B
6x8x18B
6x8x15 8x
10
x1
2A
8x
10
x1
2
8x10x15B
8x10x17B
3
1
2
5
4
4x6x18B
5x6x17
5x6x15
5x6x11A 8x8x11B
6x8
x1
1
4x5x15
4x5x11A
2.5x3x12
3x4x14
2x2.5x12
1
2
3
4
5
6
6x8x18A
6x8x18C
6x8x20
8x10x15A
8x10x21A
10x12x15B
6
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 5
Power Frame No. 2 Power Frame No. 6B
Power Frame No. 3 Power Frame No. 7
Power Frame No. 4 Power Frame No. 7A
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 5
Power Frame No. 2 Power Frame No. 6B
Power Frame No. 3 Power Frame No. 7
Power Frame No. 4 Power Frame No. 7A
1150RPM
8
SINGle STAGe SPlIT CASe PUMPS
RangeCharts
300
200
100
50
40
30
20
10
HE
AD
(m
)
FLOW (m3/hr)
10 100 1000
6x8x14HH
2.5x3x10B
2x2.5x92x2.5x10 3x4x10B
4x5x10B
3x4x10C
4x5x11C
4x
5x
11
D
5x6x11C 6x
8x
11
HH
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 4
Power Frame No. 2 Power Frame No. 4A
Power Frame No. 3 Power Frame No. 5A
3000RPM
120
100
80
60
40
20
0
HE
AD
(m
)
FLOW (m3/hr)
1 10 100 1000 100001
0x1
2x1
8
8x10x21
12
x1
4x
15
B
12
x1
4x1
8A
10x12x12
B
10
x1
2x
15
B
10
x1
2x
15
C
6x8x18A
6x8x20
6x8x18B
8
8x10x12
5x6x17
4x6x18B
8x
10
x1
7B
8x
10
x1
5B
1
2
3
4
5
6
7
8
9
10
11
12
13
4x5x10
3x4x10C
5x6x11C
5x6x11A
6x8x11
6x8x15
8x10x15A
6x8x18C
10x12x18D
8x10x12A
8x10x21A
8x8x11B
2.5x3x10B
5x6x15
4x5x15
4x5x11A 4
5
124x5x11D
3x4x14
3x4x10B
2.5x3x12
13
2x2.5x12
2x2.5x92x2.5x10
1
3
2 6
7
10
9
11
Individual performance curves should be checked for final selection. For selections not shown on this chart, please refer to the factory.
Power Frame No. 1 Power Frame No. 5
Power Frame No. 2 Power Frame No. 6B
Power Frame No. 3 Power Frame No. 7
Power Frame No. 4 Power Frame No. 7A
1500RPM
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SINGle STAGe SPlIT CASe PUMPS
PumpDimensions
MotorFrame
Model 413
143HP
145HP
182 HP
184 HP
213 HP
215 HP
254 HP
256 HP
284HPH
286HPH
324HP
326HP
364HP
365HP
404HP
405HP
444HP
445HP
Model 411
143T
145T
182T
184T
213T
215T
254 T
256T
284 TS
284T
286 TS
286T
324 TS
324T
326 TS
326T
364 TS
364T
365TS
365T
404 TS
404T
405 TS
405T
444 TS
444T
445 TS
445T
Horse-power
3500 RPM 1-1/2 2–3 5 7-1/2 10 15 20 25 30 – 40 – 50 – 60 – 75 – 100 – 125 – 150 – 200† – – –
1750 RPM 1 1-1/2
–2 3 5 7-1/2 10 15 20 – 25 – 30 – 40 – 50 60 – 75 – 100 – 125 – 150 – 200† –
1150 RPM – 1 1-1/2 2 3 5 4-1/2 10 – 15 – 20 – 25 – 30 – 40 – 50 – 60 – 75 – 100 – 125
MotorWgt.
Model 411 40 45 72 80 130 145 220 240 330 330 370 370 475 475 525 525 630 630 690 690 830 830 915 915 1095 1095 1270 1270
Model 413 43 48 84 102 132 156 300 300 420 420 420 420 570 570 570 570 950 950 950 950 1230 1230 1230 1230 1680 1680 1680 1680
C 12 13 13 14 16 18 21 23 22 24 24 25 25 26 26 28 27 29 28 30 30 33 31 34 34 38 36 40
D(See Note***)
3-1/2 3-1/2 4-1/2 4-1/2 5-1/4 5-1/4 6-1/4 6-1/4 7 7 7 7 8 8 8 8 9 9 9 9 10 10 10 10 11 11 11 11
P Approx. 8 8 10 10 11 11 13 13 16 16 16 16 18 18 18 18 20 20 20 20 22 22 22 22 26 26 26 26
AG Approx. 11 12 14 15 16 17 20 21 22 23 23 23 25 25 26 26 25 25 25 25 28 28 28 28 32 32 32 32
Model 411 Base Number
Pwr.
Serie
s M
odel
411
1 3 3 3 3 3 3 8 8 8• – 8• – 11•2 3 3• 3• 3• 5 5 8 8 9 9 9 9 11• 12 11• 12 12 – 12
3 5• 8 8 8 9 11 11 11 11 12 12 12 12 12 – 12 – 15• – 15•4 6• 6• 9 9• – 11 – 11 11 11 12 12 12• 12• 12• 12 16• – 16• – 16• – 16•5 11 11 – 12 – 12 – 12• – 12 12 12 12 13 16 16• 16• 16• 16• 16• 16• –
6B 13 – 13• – 13• – 13• 13• 13 17 17• 17 17 17 17 17 18
7 17• – 17• 17• 18 18 18•
Base 3 5 6 8 9 11 12 13 15 16 17 18 Flanges – ASA Std. Furnished As:
BaseWgt. 49 59 68 96 109 164 192 235 291 344 399 441 250#with
125#drilling StandardHA 15 17-1/4 17-1/4 20-1/2 20-1/2 26-3/4 26-3/4 26-3/4 30-3/4 30-3/4 30-3/4 30-3/4HB 33-1/2 36-1/2 42-1/2 42-1/2 48-1/2 46-1/2 54-1/2 64-1/2 54-1/2 64-1/2 74-1/2 82-1/2 250#with
250#drilling OptionalHN 3 3 3 3 3 4 4 4 4-1/2 4-1/2 4-1/2 4-1/2
D
HY
CP APPROX.C APPROX.
HNHB
MOdel 411
Notes – Apply to all models:
• Maynotbeusedforallpumpsizesinthispowerseries.Consultindividualdimension
pages for final selection.
† For motor and baseplate dimensions over 200 HP, refer to the factory.
1. Dimensionsandweightsareapproximate. 2. Complete dimensions are available.
3. Not for construction purposes unless certified for approval.
4. Framesizesshownareforopendrip-proofmotorsonly. 5. Add pump, base and motor weight for unit total weight.
6. Conduitboxisshowninapproximateposition.Dimensionsarenotspecifiedastheyvarywith each motor manufacturer.
7. Aurora® reserves the right to make revisions to its products and their specifications
and to this brochure and related information without notice.
8. 10x12x18 and 12x14x15 pump sizes are also available as bottom suction horizontal
Model 411B pumps. See individual dimension pages for complete dimensions.
10
SINGle STAGe SPlIT CASe PUMPS
PumpDimensionsPu
mp
Size
Disch.
Suct
ion
Bore
Pwr.
Serie
s
PumpWgt.(lbs.)
A D** S X CP HY VE YY411 4132x2.5x9 2 2-1/2 9
1145 215 18 7 3-1/2 8-1/2 21 4-1/2 11-1/8 9
2x2.5x10 2 2-1/2 10 145 215 18 7 3-1/2 8-1/2 21 4-1/2 11-1/8 9
2x2.5x12 2 2-1/2 12 175 260 18 8 4 10 21 4-1/2 11-1/8 10-3/4
2.5x3x10 2-1/2 3 10
2
215 300 18 8 4 9-3/4 24 5-1/2 13 102.5x3x12 2-1/2 3 12 255 360 18 9 4-1/2 11 24 5-1/2 13 11-1/23x4x10 3 4 10 260 365 18 9 4-1/2 10 24 5-1/2 13 113x4x14 3 4 14 310 435 18 10 5 12 24 5-1/2 13 134x5x10 4 5 10 330 465 18 9 4-5/8 10 24 5-1/2 13 11-1/44x5x11 4 5 11
3390 435 22 10 5 11-1/4 26 6-1/2 14 12-3/4
4x5x15 4 5 15 415 490 22 11 5-1/2 13 26 6-1/2 14 144x6x18 4 6 18
4
560 780 22 12-1/2 6-1/4 14 29 6-1/2 15 165x6x11 5 6 11 455 580 22 11 5-1/2 11-1/4 29 6-1/2 15 13-1/45x6x15 5 6 15 530 735 22 12-1/2 6-1/4 13-1/4 29 6-1/2 15 155x6x17 5 6 17 635 855 22 12-1/2 6-1/4 14 29 6-1/2 15 156x8x11 6 8 11 520 650 22 12-1/2 6-1/4 11-3/4 29 6-1/2 15 14-1/28x8x11 8 8 11 605 835 22 12-1/2 6-1/4 12 29 6-1/2 15 14-1/2
6x8x11HH 6 8 11HH 4A 990 1095 22 13-3/16 8-5/8 10 32-3/4 8-1/2 17-1/8 156x8x14HH 6 8 14HH 5A 1190 1410 30 13-3/16 7-1/2 15 36-3/4 8-1/2 19-7/16 17
6x8x15 6 8 15
5
585 735 30 13-1/2 6-3/4 14-1/4 32 7-1/2 17 16-3/46x8x18 6 8 18 800 1020 30 14-3/4 8 16 32 7-1/2 17 186x8x20 6 8 20 875 1095 30 14-3/4 8 15-3/4 32 7-1/2 17 188x10x12 8 10 12 740 925 30 14-3/4 8* 17 32 7-1/2 17 17-3/48x10x15 8 10 15 835 1040 30 14-3/4 8* 17 32 7-1/2 17 17-3/48x10x17 8 10 17 865 1085 30 14-3/4 8 17 32 7-1/2 17 17-3/48x10x21 8 10 21
6B
955 †† †† 18-1/2 9-1/2 18 38 11-1/2 – 2110x12x12 10 12 12 1325 1575 40 23 12 16 38 11-1/2 – 1910x12x15 10 12 15 1390 †† †† 25 13-1/2 17 38 11-1/2 – 2010x12x18 10 12 18 1725 †† †† 25 13-1/2 18 38 11-1/2 – 2210x12x18D 10 12 18D 7A 1920 †† †† 25 12-1/4 20 42-15/16 11-1/2 – 2412x14x15 12 14 15
72000 †† †† 24 15 17 44 11-1/2 – 22
12x14x18 12 14 18 2100 †† †† 24 15 18 44 – – 2314x16x18 14 16 18 2850 †† †† 29-1/4 16 22 44 – – 27
P DIA.APPROX.
AGAPPROX.
DH
CP
VE
Pwr. Series 1 2 3 4 5
DH Up to 256 hp 26 30 33 35 –
284 hph and up28 32 35 37 41
CP 23 27 29 31 35
Models 412 and 413Notes – Apply to all models:
* Add1"fortruedischargecenterline. ** Alwaysuselargestof2“D”dimensions. †† These pump sizes are available in a vertical chair mount configuration
in Models 412 and 413. See individual dimensions pages for complete
dimensions and weights.
MOdelS 412 ANd 413
HA
S
DISCHARGESUCTION
YY X
S
YY
A DIA.BASE
X
MOdel 411
11WWW.AURORAPUMP.COM
SINGle STAGe SPlIT CASe PUMPS
Engineering SpecificationsModels 411, 412 and 413Split Case Base MountedFurnishandinstallasshownontheplans____Right-hand(Left-hand) Aurora® Model (Horizontal – 411) (Vertical – 412 Open Shaft)
(Vertical–413FlexibleCoupled)typeSplitCase,DoubleSuction,Single Stage centrifugal pump, size ____x____x____ of bronze
fitted (all bronze) (all iron) (stainless steel) construction. The pump
shall be capable of delivering at design conditions a capacity of
____GPMwhenoperatingagainstaTotalDynamicHeadof____feet, with a temperature of ____ °F, specific gravity ____. Pump
shall have minimum guaranteed efficiency at design capacity of
____%. Pump must also be capable of delivering a maximum of
____ GPM when operating against a head of ____ feet, and at this
condition shall have a minimum efficiency of ____%. Minimum
shut-offheadacceptablewillbe____feet.Pumpshalloperateatamaximumsynchronousspeedof____RPM.
A unit operating at a lesser rotative speed will be considered, but in
no event will a pump operating at more than the maximum speed
specified be acceptable. The pump casing halves shall be of the
inline piping design and will be constructed of Class 30 cast iron
having a minimum tensile strength of 30,000 psi and shall be
of sufficient thickness to withstand stresses and strains at full
operating pressures.
Casingsshallbesubject toahydrostaticpressure testat150%of the specified duty point. Bearing housing supports, suction and
discharge flanges shall be integrally cast with the lower half of
thecasing.Removaloftheupperhalfofthecasingmustallowtherotating element to be removed without disconnecting the suction
and discharge flanges. The upper casing is to be dowel aligned to
the lower casing.
Pump sizes 10" and larger are to be of the twin volute design.Drainopeningsmustbeprovidedinthebearingarmsforremovalof
lubricating liquid. Impeller shall be of the enclosed double suction
type and shall be vacuum cast bronze (____). Impeller shall be
dynamically balanced and securely fastened to the shaft by key
and screw locked shaft sleeves. The vanes shall be designed to
reduce noise. The pump shaft shall be made of high grade SAE
1045 steel or equal, accurately machined to give a true running
rotatingelement.Theminimumdia.acceptablewillbe____".Theshaft shall be protected from wear by bronze (____) sleeves which
are key locked and threaded so that the sleeves tighten with the
rotationoftheshaft.BunaO-ringsmustbeprovidedbetweentheimpeller hub and the shaft sleeves to prevent pumped liquid from
corroding the shaft.
Pump shall be equipped with easily renewable bronze (____) casing
rings (impeller wearing rings) so designed that hydraulic pressure
will seat them against a shoulder in the pump case around the full
periphery of the wearing ring. The wear rings will be locked in place
by the doweling to prevent rotation. The rotating element shall be
mounted in heavy duty grease lubricated ball bearings and shall be
equipped with water strainers on side next to pump glands.
Bearing housings shall be so designed to flush lubricant through
and provide continuous cleaning of bearing surfaces and maximum
protection against overheating. The pump shall be supplied with
a single row inboard bearing primarily for radial loads and double
row outboard bearing primarily for thrust loads. Both bearings shall
be regreaseable lubrication ball type, designed for 250,000 hours
average life. Each bearing shall be mounted in a machined housing
thatismoisture-anddust-proof.Thehousingshallhaveregisteredfits to assure alignment, pinned to prevent rotation and bolted to
the bearing arms. Each housing shall be supplied with a grease
fitting and a plugged relief port.
Engineering SpecificationsModel 411Stuffing boxes shall be placed on both sizes of the pump centerline
to seal the pump shaft. All packed pumps having a suction lift
shall be provided with lantern rings connected to the pressure
side of the pump by cored passages in the parting flange of the
pump. The stuffing boxes shall be equipped with heavy, cast, split
glands with extra length, for easy removal for packing inspection
and maintenance. Pump and motor shall be mounted on a common
heavy baseplate of (steel with drip rim) (formed steel) (structural
steel). Pump and motor must be checked for alignment after the
pump base has been installed and grouted in place, in accordance
with the standards of the Hydraulic Institute. There shall be no
strain transmitted to the pumps.
Models 412 and 413Mechanical seal boxes shall be placed on both sides of the pump
centerline to seal the pump shaft. Each pump is to be furnished
with mechanical seals with all metal parts to be 303 stainless
steelwithBuna-Nelastomers,ceramicseat,andcarbonwasher.A bypass line must be provided for the upper seal between the
seal faces and the discharge flange to assure adequate venting
of the seal chamber and to provide lubrication. All pumps shall be
provided with cored passages in the parting flange of the pump to
provide additional circulation to both seals. The mechanical seal
boxesshallbeequippedwithheavy,cast,onepieceO-ringsealedglands. The pump shall be supported by a cast iron drip rim base.
Model 412Vertical open shaft pumps are to be driven through flexible
shafting with dia. tubing and intermediate bearings. Shafting must
be of sufficient size to transmit required HP and must be provided
with a slip spline which will permit removal of the pump rotating
assembly without removing any section of intermediate shafting,
bearings, suction or discharge piping.
Model 413Vertical flexible coupled pumps shall be furnished with a cast
iron motor bracket which is to be bolted to the vertical casing.
The motor bracket must be machined with a register fit to ensure
proper alignment of motor and pump shaft.
Models 411 and 413The pumps shall be flexible coupled to a standard (horizontal)
(vertical) NEMA, ____ HP, ____ phase, ____ Hertz, ____ volts,
____RPM(drip-proof)(tot.encl.)(hazardouslocation)motor.
800 AIRPORT ROAD, NORTH AURORA, ILLINOIS 60542 WWW.AURORAPUMP.COM
Monel is a registered trademark of Special Metals Corporation.
Aurora is a registered trademark of Pentair Ltd.
Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
A-02-1017 1/2/13 © 2013 Pentair Ltd. All Rights Reserved.